Two-Loop beta-function for nonlinear sigma model with affine-metric manifoldстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:Two-loop metric counterterms for nonlinear two-dimensional bosonic sigma-model with affine metric target manifold are calculated. The correlation of the metric and affine connection is derived from conformal invariance condition for nonlinear sigma-model which is considered as a dissipative system. Examples of non-flat non-Riemannian manifolds resulting in trivial metric beta-function are suggested.